I've found numerous guides online on how to fix the missing OEM unlock toggle on Samsung Galaxy S9 (SM-G960U) running Android 10. I've been able to follow all steps except for the last one before rebooting the phone. And that step is going into software update and unchecking download updates automatically and checking download updates manually. The problem is that those options don't exist!

I can only tap on Check for updates and there's a grayed-out option that says Continue update. I don't know if this is true, but I think it's the same as going into developer options and switching off auto-update system, which I was able to do.

Either way, I still wasn't able to fix the missing button, even after following this guide I was just talking about. I've seen other guides and they talk about the same thing that this one does.

Can someone help me unlock my OEM unlock button, please?

As of now, I played around with my phone and found out the reboot to bootloader option in the menu after starting the phone with power key + volume up + Bixby key. I didn't know what that was going to do but when I selected that, a light blue screen came on and said downloading... do not turn off target. There's an option to cancel it, but I want to see what happens.

Maybe I didn't have a bootloader at all? (sounds crazy because I need a bootloader to start my phone, so maybe it's downloading something else?). In either case, I'll keep this question posted with any new info.

  • guess U models are not unlockable. what is your chipset, csc, bootloader version
    – alecxs
    Commented Feb 14, 2021 at 23:10
  • How do I check any of those things? I can't find it in about phone Commented Feb 14, 2021 at 23:23
  • I've backed up my data via SD Card and cloud. Is that going to help at all? BTW I think the csc code is ATT Commented Feb 14, 2021 at 23:26
  • android.stackexchange.com/q/232732
    – alecxs
    Commented Feb 14, 2021 at 23:28
  • So my bootloader version is 190711 because it's the 5th digit from the build number (or 1 if that's the only digit you're looking for) Commented Feb 14, 2021 at 23:32

2 Answers 2


Regarding the 7-day wait mentioned in millertime90's answer, that is completely untrue. I've had mine for over 2 months, and never showed the OEM unlock. I did hear though that one certain version allows it but the G960U cannot.

Also, that blue screen is called "Download Mode". It's used for when using Odin or other tools to reflash/flash images to your device.

  • Welcome to a Q&A site Android Enthusiasts Stack Exchange. We appreciate everyone's contribution, though please understand that unlike most forums, we prefer to have less chatty conversations. Also, please note that we might have to moderate every post to keep them under the policy, either by editing or deleting them. I hope we can work together contributing here while also following the norms. Thanks for your understanding :)
    – Andrew T.
    Commented Jul 27, 2023 at 4:13

You have to wait 7 days after enabling developer mode, and OEM with show up

  • Hello. Where did you read this, or on which Android device did you test this?
    – Firelord
    Commented Dec 2, 2021 at 22:10
  • AFAIK, this applies to Xiaomi devices, but I don't think Samsung has this policy.
    – Andrew T.
    Commented Dec 3, 2021 at 0:05

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